skip to Main Content
+ 31 (0)715318475 info@gouda-geo.com Zoeken   Search
Gouda Geo
  • Home
  • CPT
  • SPT & DPT
  • Instrumentation
  • Accessoires
  • Used & Ex-Demo
  • Rental
  • Services
  • More
    • News
    • Clients at work
    • Pictures
    • Contact
  • Search

Triaxial Seismic CPT System

Quotation

Contact

Seismic Cone Penetration Testing (SCPT or SCPTu) is an accurate and reliable geotechnical instrument to determine low strain in-situ compression (P) and shear (S) wave velocity profiles.

The system features the following advantages:

  • Seismic tests are carried out during a traditional CPT(u) test
  • Triaxial seismic adapter allows for measurement of the seismic waves in 3 different orientations
  • Software for acquisition, display, plotting, storage and analysis of the seismic data
  • Allows for seismic testing according to all international standards
  • General Description
  • Triaxial Seismic Module
  • Technical Specifications

Seismic Cone Penetration Testing (SCPT or SCPTu) has proven to be a very accurate and reliable and therefore important tool in geotechnics to determine low strain in-situ compression (P) and shear (S) wave velocity profiles. The P-wave and S-waves velocities are directly related to the soil elastic constants of Poisson’s ratio, shear modulus, bulk modulus and Young’s modulus. The accurate determination of P-wave and S-wave arrival times from the recorded time series is of utmost importance to calculate reliable seismic wave velocities.

Since the seismic tests are carried out during a traditional CPT test (the seismic module is mounted on top of a traditional electric CPT (piezo-)cone), the parameters shear wave right, shear wave left and compression wave can be combined with the parameters obtained with traditional CPT testing, namely the cone resistance (qc), the local friction (fs), the deviation of the vertical (i) and the in-situ pore pressure (U).

Accurate in-situ P-wave and S-wave velocity profiles are of paramount importance in geotechnical foundation design. These parameters are used in both static and in dynamic soil analysis procedures where elastic constants are input variables into models defining the different states of deformations such as elastic, elasto-plastic, and failure (Finn, 1984).

Another important use of estimated S-wave velocities in geotechnical design is in liquefaction assessment of soils. Since the S-wave velocity is influenced by many variables that influence liquefaction (e.g. void ratio, soil density, confining stress, stress history, and geologic age), it is an excellent index of liquefaction.

The Gouda-Geo seismic CPT system is an easy to use, versatile and straightforward system, that can be used in combination with standard 10 cm² or 15 cm² electric CPT(U) cones. The system comprises grosso modo of a triaxial seismic adapter, a signal distribution box and a seismograph.

The seismic CPT system mainly consists of standard industry components (making it cost effective) of proven technique and reliability (it has e.g. a controllable source). The output data are directly usable by the engineer. There is absolutely no need at all for signal conditioning systems and alike. The user interface is straightforward that makes the seismic CPT system really simple to operate. The results of seismic CPT testing can be coupled effectively to soil probes. Details of the seismic CPT system, the down hole test procedures, and comparisons with cross hole results have been described by Campanella et al (1986).

The seismic modulecan be mounted on top of a 10 cm² electric CPT(U) cone and allows for highly accurate seismic testing whilst performing a standard CPT(u) test.

The module houses 3 individual geophones in 3 different orientations, which makes the adapter suitable for measuring the seismic waves in the X, Y and Z axis, also called triaxial seismic testing. These highly accurate geophones have an unlimited shelf life and provide years of trouble-free service.

The seismic adapter’s geophones are self-generating velocity detectors especially designed for rugged environments. They withstand extreme shock with no change in performance characteristics.

The geophone itself is sensitive to motion along its longitudinal axis and is designed to operate in any position from vertical to horizontal. With a natural frequency of 28 Hz, the geophone is an ideal motion sensor for frequencies in the acoustic spectrum.

The adapter is designed such that the geophones record the soil profile’s response to low strain seismic disturbances. Through its diameter of 44 mm it also reduces the friction on the CPT sounding tubes.

  • Length: 380mm
  • Diameter: 44mm
  • Measuring orientation: X, Y and Z axis
  • Geophone: 3x Geospace GS-14-L3
  • Sensitivity: 290 mV/ips (± 15%)
  • Natural frequency: 28 Hz (± 20%)
  • Coil resistance: 570 Ohm (± 5%)
  • Coil inductance: 45 mh
  • Damping factor: 0.18 (± 30%)
  • Damping constant: 172
  • Displacement limit: 2.29 mm (0.09 in)
  • Inertial mass: 2.155 gr (0.076 oz)
  • Orientation angle: ± 180°
  • Operating temperature: -45° to +100°C
  • Storage temperature: -45° to +100°C
  • Shock resistance: 5000 G
Related products

Magnetometer Cone (MagCone)

More information

Electric Vane Tester

More information

Diëlectrical and Conductivity Module (temporarily not available)

More information

Address

Gouda Geo-Equipment B.V.
Satellietbaan 8
2181 MH Hillegom
The Netherlands

Tel.: +31(0).715.318.475
E-mail: info@gouda-geo.com

More about us

Information

  • News
  • FAQ
  • Picture gallery
  • Client portal login
  • Software downloads
  • Brochures
  • 3 year warranty

Products

  • CPT equipment
  • DPT & SPT equipment
  • Instrumentation
  • Accessoires
  • Used & ex-demo
  • Rental
  • Services

Social Media

LinkedIn
Facebook
Instagram
© Copyright 2022 | Privacy statement | General conditions | References | Disclaimer
Search

Notice: Undefined index: cookie_single_popup in /home/goudageo/domains/gouda-geo.com/public_html/wp-content/plugins/ct-ultimate-gdpr/includes/views/cookie-template.php on line 3
Cookies to make this site work properly, we sometimes place small data files called cookies on your device. Most big websites do this too. Read more
Accept
Cookies Settings
Cookie Box Settings
Cookie Box Settings

Privacy settings

Decide which cookies you want to allow. You can change these settings at any time. However, this can result in some functions no longer being available. For information on deleting the cookies, please consult your browser’s help function. Learn more about the cookies we use.

With the slider, you can enable or disable different types of cookies:

  • Essential
  • Functionality
  • Analytics
  • Advertising

This website will

  • Essential: Remember your cookie permission setting
  • Essential: Allow session cookies
  • Essential: Gather information you input into a contact forms newsletter and other forms across all pages
  • Essential: Keep track of what you input in a shopping cart
  • Essential: Authenticate that you are logged into your user account
  • Essential: Remember language version you selected

This website won't

  • Remember your login details
  • Functionality: Remember social media settings
  • Functionality: Remember selected region and country
  • Analytics: Keep track of your visited pages and interaction taken
  • Analytics: Keep track about your location and region based on your IP number
  • Analytics: Keep track of the time spent on each page
  • Analytics: Increase the data quality of the statistics functions
  • Advertising: Tailor information and advertising to your interests based on e.g. the content you have visited before. (Currently we do not use targeting or targeting cookies)
  • Advertising: Gather personally identifiable information such as name and location

This website will

  • Essential: Remember your cookie permission setting
  • Essential: Allow session cookies
  • Essential: Gather information you input into a contact forms newsletter and other forms across all pages
  • Essential: Keep track of what you input in a shopping cart
  • Essential: Authenticate that you are logged into your user account
  • Essential: Remember language version you selected
  • Functionality: Remember social media settings
  • Functionality: Remember selected region and country

This website won't

  • Analytics: Keep track of your visited pages and interaction taken
  • Analytics: Keep track about your location and region based on your IP number
  • Analytics: Keep track of the time spent on each page
  • Analytics: Increase the data quality of the statistics functions
  • Advertising: Tailor information and advertising to your interests based on e.g. the content you have visited before. (Currently we do not use targeting or targeting cookies)
  • Advertising: Gather personally identifiable information such as name and location

This website will

  • Essential: Remember your cookie permission setting
  • Essential: Allow session cookies
  • Essential: Gather information you input into a contact forms newsletter and other forms across all pages
  • Essential: Keep track of what you input in a shopping cart
  • Essential: Authenticate that you are logged into your user account
  • Essential: Remember language version you selected
  • Functionality: Remember social media settings
  • Functionality: Remember selected region and country
  • Analytics: Keep track of your visited pages and interaction taken
  • Analytics: Keep track about your location and region based on your IP number
  • Analytics: Keep track of the time spent on each page
  • Analytics: Increase the data quality of the statistics functions

This website won't

  • Advertising: Tailor information and advertising to your interests based on e.g. the content you have visited before. (Currently we do not use targeting or targeting cookies)
  • Advertising: Gather personally identifiable information such as name and location

This website will

  • Functionality: Remember social media settings
  • Functionality: Remember selected region and country
  • Analytics: Keep track of your visited pages and interaction taken
  • Analytics: Keep track about your location and region based on your IP number
  • Analytics: Keep track of the time spent on each page
  • Analytics: Increase the data quality of the statistics functions
  • Advertising: Tailor information and advertising to your interests based on e.g. the content you have visited before. (Currently we do not use targeting or targeting cookies)
  • Advertising: Gather personally identifiable information such as name and location

This website won't

  • Remember your login details
Save & Close